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Physics Programs & Projects

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Chemical/Biochemical Microsensor Science
Last Updated Date: 10/02/2012

The Process Sensing Group at NIST is investigating a range of fundamental and technological issues related to next-generation chemical and … more

Spectral responsivity measurement
Last Updated Date: 10/02/2012

NIST provides calibration of the spectral responsivity and spatial uniformity of photodetectors for use in industrial and government labs. These … more

Energy Determination of X-Ray Transition Energies Using the NIST TES Microcalorimeter Detector
Last Updated Date: 10/02/2012

Previous efforts to produce a comprehensive tabulation of atomic x-ray transition energies have been hampered by the fact that a) detectors having … more

Molecular Orbital Structure of Energetic Nitrogen Compounds from X-Ray Emission Spectroscopy
Last Updated Date: 10/02/2012

When chemical compounds of low-Z elements are excited by x-rays, the ionized core states are filled from the valence band. The molecular orbital … more

Inkjet Gravimetry
Last Updated Date: 10/02/2012

Gravimetric and optical methods were developed to assure quantitative deposition of compounds from nano-dispense devices onto the surfaces of … more

Spectroscopic Measurements of Atmospheric Gases for Monitoring Greenhouse Gases
Last Updated Date: 10/01/2012

Climate scientists are developing a new generation of spectrometers for the NASA-sponsored inventory of atmospheric greenhouse gases, most notably … more

Dosimetry Standardization for Radiobiology
Last Updated Date: 08/21/2012

A program for the development of dosimetry standards for radiobiology was launched through a highly successful workshop.  The … more

Micro- and Nano-Mechanical Systems
Last Updated Date: 07/25/2012

Micro- and nano-optomechanical systems are being investigated experimentally to bring these systems toward the quantum limit, study quantum … more

Quantum State Manipulation of Ultra-cold Atoms and Superconducting Devices
Last Updated Date: 07/25/2012

Theory is being developed and exploited for the quantum operation of laser-cooled and Bose condensed atoms as well as superconducting devices, such … more

Single Electron Coherence
Last Updated Date: 07/25/2012

CMOS-compatible Si-based SET quantum dots systems are being fabricated and electrically characterized at low temperature to explore the possibility … more

Quantification of the Alpha Wall Effect in Liquid Scintillation Counting
Last Updated Date: 06/27/2012

A long-standing uncertainty in liquid scintillation (LS) counting has been the possible loss of counting efficiency. 

Primary Radioactivity Standardization of Ni-63
Last Updated Date: 06/27/2012

Ni-63 is of considerable interest and importance in radionuclidic metrology as well as for radiation protection surveillance around nuclear … more

Components of Variance in Liquid Scintillation Counting
Last Updated Date: 06/27/2012

As part of the standardization of the 239 Pu solution that was disseminated by NIST as Standard Reference Material (SRM) 4330C, a detailed study … more

Radon Binding to Water-Soluble Cryptophane
Last Updated Date: 06/27/2012

Collaboration on investigating the thermodynamics of radon binding with a new and novel class of cryptophane molecules is currently underway with … more

New Statistical Analysis Tools
Last Updated Date: 06/27/2012

Members of the Radioactivity Group (RG) have been actively collaborating with statisticians in the NIST Statistical Engineering Division to … more

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